In this module, attribute values and content nodes can contain either raw
text or entities. In most cases, these can be fully resolved at parsing. If
that is the case for your documents, the Text.XML module provides
simplified datatypes that only contain raw text.

Render

Defines some top level namespace definitions to be used, in the form
of (prefix, namespace). This has absolutely no impact on the meaning
of your documents, but can increase readability by moving commonly
used namespace declarations to the top level.